lib/osutil: Use filepath.Join in tests (#6740)
lib/osutil: Use filepath.Join in tests (#6740)


syncthing/syncthing,imsodin/syncthing,wweich/syncthing,wweich/syncthing,syncthing/syncthing,imsodin/syncthing,imsodin/syncthing,wweich/syncthing,imsodin/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing